Transgenic Plant
Which of the following has been widely used to provide resistance against plant viruses?

Expression of anti-virus genes in vectors that transmit viruses
Expression of virus coat protein genes in transgenic plants
Expression of ribonuclease (RNase) genes in host plants
Virus resistance genes from bacteria

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Transgenic Plant
Cross protection against viruses in transgenic plants can be obtained by

any of the above
inoculating the susceptible strain with genes of nucleocapsid
inoculating the susceptible strain of a crop with a mild strain of a virus that helps in developing resistance against more virulent strain
inoculating the susceptible strain with the coat proteins of virulent strain

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